Excellent review. I agree with the suggestion to post the answers on a separate slide. I would add a step by step proof of the problem so the student can understand their mistake and why the correct answer is correct.

It’s been a while for me on conversions, so I wanted to do a little refresher.

I noted on your Kg,g,mg,mcg chart the conversion is correct, 3kg=3000g moving the decimal place 3 to the right. Which would make this conversion to mcg=3,000,000,000. Am I correct?

Now moving on to the conversions to mcg chart, the 1st conversion is 1g=1,000,000 mcg, but on the 5th conversion you have 175g is equal to 175,000mcg. Wouldn’t the calculation be correct if it were .175g = 175,000mcg or 175mg = 175,000 mcg?